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习题练习：Physics Unit12: Sound
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 作者: admin  发布日期: 2022-09-26 09:56    总分: 87分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月07日 09:59  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following is a f7ihtuys17 z rks3 w6c2alse statement?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In general, sound is conducted fastest t v-evo-g nh5qk 8xp7xrg:xi8+hrough

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the speed of sound in a steeh ;jlk74 maczkw35u*ezfu )* ml rod?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the temperature of the air increases, what 3; 1r n3zc4hoyxubccb7 )tq 6xhappens to the velocity of sound? (Assume that all other facto ztb736x )1yxh3ru 4c qncob;crs remain constant.)

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compared to the velocity of a 400 Hz sound, the velocity of agc6wb nope (3 xs*i,(r 200 Hz sound through a(( *bcp x srgeo63win,ir is

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Compared to the wavelength of a 400 Hz sound, the wavelengtb bqf57l vz a69ki90ej-nxk w*h of a 200 Hz sound in aik bzj9 e9f-v*q6wa57kblxn0ir is

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound vibrations with frequencien1k,yxdks+o .3 c( u7udwzl9y dlaee8/ hf.;ds greater than 20,000 Hz are called

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound vibrations with fredlm,k 25(tc x os l22vav;c2xlquency less than 20 Hz are called

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose that a sound souzu cgeh0wzw12 tiul.8 ) 9k1idrce is emitting waves uniformly in all directions. If you move to a point twice as far away from the source, tw kiztc e9hdgu1.u)8z1 i2wl0he frequency of the sound will be

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For spherically diverging waves, intensity is proportb * b):7tdtgib, n lp56w3zcvlional to

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a point source at a distance d from the source is I. What is thae 7 xm*1sg5r.ww; flhe intensity at a distance 2d from the f sewhgx . *75lw;1marsource?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You double your distance from a sound sournwjqvuyct02 pmi -.m : (7q6jnce that is radiating equally in all directions. What happens to the intens6.7j wq-mncqjn2iv t:yp0(mu ity of the sound? It reduces to

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You double your distance from a sound source that is radiating equally in jtjgtbc1 xj)kw/i:/l b5/qe: all directions. What happens to the intensity level of the sound? It :/ tebt 1jlw/ :xbjci5qkjg/)drops by

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following increases as a sound becomes tmph**:1mt r n didt25cg, um+louder?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You move slowly toward qyq38 es.hzc+a speaker emitting a pure tone. What characteristic of the sound incre y.h3qz8c+sqeases?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What determines "loudness" of a musical ue+ 9a4gfd0ak0u 9 l.lzxb0j,ujmmi :note?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What determines the "pitch" of a zcdheb+ ck:i 1-y.o 5amusical note?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When sound passes fro3b )h eprv d5xf *rjhqwwry*;7avz(-1m air into water

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Pressure and displacement waves are-sz-nt0 h9aum0 vn+(q49 pi+hjtyuu v

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider the standing wave on a guitar string and the sound wave generated by tosof g8x w/0 .vi//g,uw iu2dahe guitar as a result 8ougvwgoa isx /./udf2w,/0 iof this vibration. What do these two waves have in common?

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a resonating pipe which is ope8rtc dgcg8 r.sk(8s2sn at both ends, there

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an open pipe of length L. What are the wavelengths of the three lowes5l *yfmh w9*ioi+,cfzt tones produced by 5yow+, 9cflhmz ii*f*this pipe?

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lowest tone to resonate in an ope1kpkaj r)yng ;g+ar s+y9p75u n pipe of length L is 200 Hz. Which one of the folra ;5ps ya7g )n1+jpruyg+k9 klowing frequencies will not resonate in the same pipe?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An open pipe of length L is resonating at its fundamental frequency. Which statgwpqkf fk/2kw,q5e 12 q.9lugqf5 gf/ l2p91w.k,w 2qqek ukgement is correct?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a resonating pipe which is zsd9h jg7a1 0nvy7fv9vry c 0/open at one end and closed at the other, there

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a closed pipe of length L. What are the wavelenjj7-z 4g;mqbggths of the three lowest tones prom gz ;-q47jjbgduced by this pipe?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lowest tone to resonate in a closed pipe of length L is 200 Hz. Whi; (rhm-ay.( 17 xs vloi0pmbdach of the following frequencies will not resonatiam(hd1oal7 - b0ryspx;(m v. e in that pipe?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pipe of length L closed at one end i+-*:p+bo k2t1 wu1hba wliuqne1fi, is resonating at its fundamental frequency. Which stateewob2: u1p+a*1kiw1tinuih+, b -lqf ment is correct?

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A person stands between two speakers driven by the same soure 6*m6;c m1glbs7c:ljd 7 vpo:j vwep2ce. Each speaker produces a tone with a freq jmp7 cb1 :m: lo;gsdl6evwp *jv276ceuency of 200 Hz on a day when the speed of sound is 330 m/s. The person is
1.65 m from one speaker and 4.95 m from the other. What type of interference does the person sense?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to produce be+n 4 xbj)qdc0kbq.wriah .f 5 v*ky,e:ats, the two sound waves should have

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two pure tones are sounded together and a particulavocr ;b nkhn fkt,h7/ ko,4+f:r beat frequency is heard. What happekbvo 7n:/ kr ,kfhco 4,tf;n+hns to the beat frequency if the frequency of one of the tones is increased?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Doppler shift explr87arw3vn 09pw4bqgfa8hj n+ ains

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A sound source approaches a4l-(lwx( qmhyr e/;lv os8 pq6 stationary observer. The frequency heard by the observer ir6vex llqphyl o8s m-(q;/( w4s

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A sound source deparwk);m3 c)gpx dts from a stationary observer. The frequency heard by the observer isdc3);mx gwk p)

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a jet plane were to double its MACH-speed, its half-angl8/u 3ejy1 qhmv at*yc+e will decrease by a factoa/y1uht*yvj m+ q 38ecr of:

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The speed of an ultrasonic sound of frequency 45 kHz in air is 352gjbk+ m9 ib -k5i9nls. m/s. What is th i5kbk9-i.b m9gj ns+le air temperature?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the ratio of 8/g(tjf q 1a,ku8xmpethe speed of sound in air at $0 \; ^{\circ}C$ to the speed at $100 \; ^{\circ}C$?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  On a day when the speed of sound in air is 340 m/s, a bat jt t i18kj2ftc+oupw9 qh25 8temits a shriek whose echo reaches it 0.02 5o8 tt+pf8 21hucw2jqtj9 kit50 s later. How far away was the object that reflected back the sound?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You shout at a cliff, and hear the echo in 4.00 s. The temperature is y; m(hpjn7 0rp(rm om.$0 \; ^{\circ}C$. How far away is the cliff?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you hear thunder 5.0 s after sbp ph74zt-8cgh6 uar )eeing a flash of lightning, the distance to the lightning strikap7-zp6 r4bg 8hu)t che is about

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An echo is heard 2.0 s from a cliff on a day the temperature is);1phf r((s2ht yzpkl je4s x: $15 \; ^{\circ}C$. Approximately how far is the cliff from the observer?

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  On a $30 \; ^{\circ}C$ day, there is an explosion. The sound is heard 3.4 s after seeing the flash. How far away was the explosion?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You drop a stone into a deep well and hear the splash 2.5 -)gr (hl ob8ohs later. How deep is the well? (Ignore air resistance, and assume the velocity of sound is 340oh8 )r(- lgobh m/s.)

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The wavelength in air of a sound wave of freq2-ntb9 -qbsb zuency 500 Hz is

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sound traveling in air 4.0 3a,ky bx,izep lowat $23 \; ^{\circ}C$ enters a cold front where the air temperature is $2 \; ^{\circ}C$. If the sound frequency is 1500 Hz, determine the wavelength in the warmer air and in the colder air.

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the intensity level p )1g,jcub,8rq9tz bwof a sound with intensity $10^{-3} \; W/m^{2}$?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the intensity of a 70fxm ;dca9:z h5 -9tfw4l qgdb0-dB sound?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the ratio of the intensitiwxvw5+ muv.:v hnhe::jv( n0 ues of two sounds with intensity levels of 70 dB and 40 w 5hm0 wn:jn(hvv.+x :ve: vuudB?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity level by 15 engines in a garage is 1y/+msf-dd ak 100 dB. What is the intensity level generated b/+sd1f md y-kay one engine?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity at a distance of 6.0 m from a source that is rad)jfjnep6j+s e nfr,:y ,q g62liating equally in all dir6j6ly njee,gnfspj: ) ,r2+fqections is
$6.0 \times 10^{-10} \; W/m^{2}$. What is the power emitted by the source?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity at a distance of 6.0 m from a source that is radiating equaa 6z:0((hj gzp im1mkolly in all direm 0 pgmzo:6(jh iakz(1ctions is
$6.0 \times 10^{-10} \; W/m^{2}$. What is the intensity level in dB?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A barking dog delive.85)0x* mio)h dh kq9auef2d wo sb1bvrs about 1 mW of power, which is assumed to be uniformly distributed in all directions. What is the intensity level at a distanxbq*wh5 9uk1i fdvso8 bm)0de ho2.a)ce 5.00 m from the dog?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity level is 65 dB at a distance 5.00 m from a barking df 2go54ww;n8ax 6 dogvog. What would be the i5dx g8 fwo;g2o an6v4wntensity level if two identical dogs very close to each other are barking?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At a distance of 15 m from a sound source the intensity level is 60 dB. W h ru3-alb ;r,k4zopbd8rl) 0ihat is the ,dzbk)l3 0o4 i8u-lr;r apbrhintensity level (in dB) at a point 2.0 m from the source? Assume that the source radiates equally in all directions.

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The sound intensity level 5.0 m from a point source is 95 dB. At what distanzl64ix 9: 4eht8 *atuukrnn ;rce will it be *9nukl r ia;8x 4eu:4thnr6z t75 dB?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The third harmonic of a complex tone has a frequency of 1200 Hz. What(c;d*sh9++avu z6 jppfia v+ d is the frequency of the fourth harmonic+zv dcppsdhj+v 9+f *6u;(aia?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of the third harmonic of an open pipe is 900 Hz. Wha -p)v+o 6iexgfwomc.:i1 *bjz4e 6lxwt is the length of the pipe?m.pw ovgxf)i+jo*lx4ce 1b6w: ie z6-

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lowest tone to resonat.n4 zi8g,jt mo7 7ivbzzd0(gpe in an open pipe of length L is 400 Hz. What is the frequency of the lowest g(z4iijdzn ,gtpom.0 7 7z8 vbtone that will resonate in an open pipe of length 2L?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An organ pipe open at both ends has a length of 0.80 m. If the velocity of soux uq6 ede9jlc * vzwc;3cq-4k9nd in air x93uq*-49 c vc k6;lwqzedcej is 340 m/s, what is the frequency of the second harmonic?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-m long pipe is in a( 0u3 sqvleys(q/smgr- .vlw* room where the temperature is $20 \; ^{\circ}C$. What is the fundamental
frequency if the pipe is open at both ends?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The fundamental frequency in a pipe closed at one6i6kk ldaxj/ dea; *.l7pw fd0 end is 330 Hz. What is the frlew j6 dd;xk*.ifa /l6a0 dpk7equency of the third harmonic?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the length of z pk,nf3.2ib(iwm x5hthe shortest pipe closed on one end that will have a fundamental frequency o.5p,i3ib m wf 2hxnkz(f 60 Hz on a day when the velocity of sound is 340 m/s?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-m long pipe is in a room where*avu2 d:f*q3sqey- w+nvvom / the temperature is $20 \; ^{\circ}C$. What is the fundamental frequency if the pipe is closed at one end?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-m long pipe is/6 ,3c j9sfqs+jx cz+qpym k4t in a room where the temperature is $20 \; ^{\circ}C$. What is the frequency of the second harmonic if the pipe is closed at one end?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A closed organ pipe of length 0.75 m is played when the 5f2zy g8yxe7s (qyx *mspeed of sound in air is 340 m/s.(m7y qg*x 2y z85sefyx What is the fundamental frequency?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider two pipes of the sypq / . vpm)/7yregku,ame length: one is open and the other is closed on one end. If the fundamental frequency of the open pipe is 300 Hz, what is the y7 /qv,.mryp g/ep)ku fundamental frequency of the closed pipe?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two adjacent sources eac: l,kze4fi *efh emit a frequency of 800 Hz in air where the velocity of sound is 340 m/s. How much farther back would source 1 have to be l z:e*,f 4iekfmoved so an observer in front of the sources would hear no sound?

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two speakers are placed side by side and driven by the same frequency of 500 aqda/co98 bn 2Hz. If the distance from a person to one speaker is 5.00 m and the person detects little orq/9aac2d bn 8o no sound, which of the following is a possible the distance from the person to the other speaker? (The sound speed is 340 m/s.)

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two tunes have frequencies of 440 Hz and 444 Hz. What is the beatbth ;-hsre vzn.1c k33 frequency?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A music tuner uses a 550-Hz tuning fork to tune the ; bkdfxez6k t), v5gk4frequency of a musical instrument. If the tuner hears a b6efkv5k)k tb;,4dg z xeat frequency of 2 Hz, what is the frequency of the instrument?

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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The wavelengths of t. 1kwh*m ype+gmaf8rq,nqq3+he sounds produced by two horns are 6 m and 7 m respectively. What beat frequency is heard when the horns are sounded on a day qke.,qmyf8q+3pwh*1+a rmg nwhen the velocity of sound is 340 m/s?

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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The corresponding violin strings on twolbq 3sg--ru; :b2:ynn dnlkx 1 violins in an orchestra are found to pro lbk;y:b x-n ldn-urq g23s:n1duce a beat frequency of 2 Hz when a frequency of 660 Hz is played. What percentage change in the tension of one of the strings would bring them to the same frequency?

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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An observer approaches a stationary 1000-Hz sound source at twic.mzgzbba g.t45s92d ne h8qu9e the speed of sound. The observer 8 b 9ghqz5 e9.s.gzt2numa4 bdhears a frequency of

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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A sound source (normal frequency of p48ds kk *2nnpv pkt8+1000 Hz) approaches a stationary observer at one-half the speed of sound. The observer hears ank4k* + s p8v8nppt2kd frequency of

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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A sound has a frequency of 1000 Hz. If a listener0he rvvso8,a z./wp s0 moves with a speed of 30 m/s away from the source, what is the frequency heard by the obse,.rossze wa vph8v 0/0rver? (The sound speed is 340 m/s.)

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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A police car has an 800-Hz siren. It is traveling at 35 m/s on a day when tf7f-ilcg wwk ne)q *)+qc/cl/he speed of sound through air is 340 m/s. The car approaches and passes an observer who is s -clcw/nqc glwi7f)* f+)ekq/tanding along the roadside. What change of frequency does the observer hear?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency heard by a stationary observer when af*o 8r-7e9eb*pnvl+s *plw1 ifhc; ia train approaches with a speed of 30 m/s. The frequency oi liecl*rp -*eo9n1p8f f+avhbs;w* 7f the train horn is 600 Hz and the speed of sound is 340 m/s.

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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A train is traveling toward you at 120 km/h. Thtw 2btc+l/- rue/0vyie train blows its 400-Hz whistlebet0ciuy /+ w /2-vltr. Take the speed of sound to be 340 m/s. What frequency do you hear?

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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are moving at 120 km/h toward a stationary train. The n g .qeu:l.q7)kreae .edno-+train blows its 400-Hz whistle. Take the speed of sound to be 340 mn ee-drqe)k+un:7 e .o.lg a.q/s. What frequency do you hear?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A train is traveling away from you at 120 km/h. The train blows t2c9hojr1 it, its 400-Hz whistle. Take the speed of sound to be 340 ji,1 9h 2octrtm/s. What frequency do you hear?

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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A train is traveling away from you at 120 km/h. It blows its whistle, a084m,z)ifexk; n dkahnd you hear a tone of 400 Hz. Take the speed of sound to be 340 m/s. Wha x,i84em; kadf nhz0k)t is the actual frequency of the whistle?

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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a train horn is 500 Hth sf*4f t,76wer gjn;c8hww3z. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer if the observer is moving awayet , w 8h4 sncfh*3fj6ww7g;rt from the train with a speed of 30.0 m/s?

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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a train horn is 500 Hz. Ass0 egwt-hpjd)(ume the speed of sound in air is 340 m/s. What is the freque(phdt)g0- jw ency heard by an observer if the observer is approaching the train with a speed of 30.0 m/s?

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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sonar is used to determine the speed of an uklwq/( tj y:(ml r/r9object. A 40-kHz signal is sent out, and a 42-kHz signal is returned. Assume the spee kw 9uy/(lrm rq(:/tjld of sound is 345 m/s. How fast is the object moving?

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The half angle of the conical shock wa eqkbai73g/gpty+) b8: a/rz ave produced by a supersonic aircraft is $60^{\circ}$. What is the Mach number of the aircraft?

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A jet flies at a speed of Mach 1.4. What is the half-angle of the f/ n fbu8nk05ge18gps0s lkj6conical shock wave fk5gpejss 8nku6nf0 /1 flg0 8bormed?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The Concord airplane flies from the y92 7+yndxdokUnited States to Europe with a Mach number of 1.05 whn7+k9 d ydoyx2ere the air temperature is $5.0 \; ^{\circ}C$. What is the speed of the plane?

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